package com.study.component;

import org.springframework.beans.BeansException;
import org.springframework.context.ApplicationContext;
import org.springframework.context.ApplicationContextAware;
import org.springframework.stereotype.Component;

import java.util.Map;

/**
 * 类的描述
 *
 * @author Administrator
 * @date 2022-05-13
 */
@Component
public class ApplicationContextUtils implements ApplicationContextAware {
    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        if (ApplicationContextUtils.applicationContext == null) {
            ApplicationContextUtils.applicationContext = applicationContext;
        }
    }

    public static Object getBean(String name) {
        return applicationContext.getBean(name);
    }

    public static <T> T getBean(Class<T> requiredType) {
        return applicationContext.getBean(requiredType);
    }

    public static <T> T getBean(String name, Class<T> requiredType) {
        return applicationContext.getBean(name, requiredType);
    }

    public static String[] getBeanNamesForType(Class<?> requiredType) {
        return applicationContext.getBeanNamesForType(requiredType);
    }

    public static <T> Map<String, T> getBeansOfType(Class<T> requiredType) {
        return applicationContext.getBeansOfType(requiredType);
    }
}